<script>
import draggable from 'vuedraggable'
import render from '@/utils/generator/render'
import logo from '@/assets/logo/logo.png'
import { formConf, inputComponents, layoutComponents, selectComponents } from '@/utils/generator/config'
import drawingDefault from '@/utils/generator/drawingDefault'

const components = {
  itemBtns(h, element, index, parent) {
    const { copyItem, deleteItem } = this.$listeners
    return [
      /*<span class="drawing-item-copy" title="复杂属性布局" onClick={event => {
        copyItem(element, parent); event.stopPropagation()
      }}>
        <i class="el-icon-copy-document" />
      </span>,*/
      <span
        class="drawing-item-delete"
        title="删除"
        onClick={event => {
          deleteItem(index, parent, element)
          event.stopPropagation()
        }}
      >
        <i class="el-icon-delete" />
      </span>
    ]
  }
}
const layouts = {
  colFormItem(h, element, index, parent) {

    console.log('element', element);
    const { activeItem } = this.$listeners
    let className = this.activeId === element.formId ? 'drawing-item active-from-item' : 'drawing-item'
    if (this.formConf.unFocusedComponentBorder) className += ' unfocus-bordered'
    return (
      <el-col
        span={element.span}
        class={className}
        nativeOnClick={event => {
          activeItem(element)
          event.stopPropagation()
        }}
      >
        <el-form-item
          style="background:#f6f7ff;text-align: justify;"
          label-width={element.labelWidth ? `${element.labelWidth}px` : null}
          key={element.basicCode}
          label={element.label}
          required={element.required}
        >
          <render
            key={element.basicCode}
            conf={element}
            onInput={event => {
              this.$set(element, 'defaultValue', event)
            }}
          />
        </el-form-item>
        {components.itemBtns.apply(this, arguments)}
      </el-col>
    )
  },
  rowFormItem(h, element, index, parent) {
    const { activeItem } = this.$listeners
    const className = this.activeId === element.formId ? 'drawing-row-item active-from-item' : 'drawing-row-item'
    let child = renderChildren.apply(this, arguments)
    if (element.type === 'flex') {
      child = (
        <el-row type={element.type} justify={element.justify} align={element.align}>
          {child}
        </el-row>
      )
    }
    return (
      <el-col span={element.span}>
        <el-row
          gutter={element.gutter}
          class={className}
          nativeOnClick={event => {
            activeItem(element)
            event.stopPropagation()
          }}
        >
          <span class="component-name">{element.componentName}</span>
          <draggable list={element.children} animation={0} group="componentsGroup" class="drag-wrapper">
            {child}
          </draggable>
          {components.itemBtns.apply(this, arguments)}
        </el-row>
      </el-col>
    )
  }
}

function renderChildren(h, element, index, parent) {
  if (!Array.isArray(element.children)) return null
  return element.children.map((el, i) => {
    const layout = layouts[el.layout]
    if (layout) {
      // alert('layout')
      // console.log(layout);
      return layout.call(this, h, el, i, element.children)
    }
    return layoutIsNotFound()
  })
}

function layoutIsNotFound() {
  throw new Error(`没有与${this.element.layout}匹配的layout`)
}

export default {
  data() {
    return {}
  },
  components: {
    render,
    draggable
  },
  props: ['element', 'index', 'drawingList', 'activeId', 'formConf'],
  render(h) {
    const layout = layouts[this.element.layout]

    if (layout) {
      return layout.call(this, h, this.element, this.index, this.drawingList)
    }
    return layoutIsNotFound()
  },
  methods: {}
}
</script>
